The rematch between U.S. Rep. Ron Barber and retired Air Force Col. Martha McSally has lived up to its billing as one of the country’s most closely watched races in at least one capacity — outside spending.

WASHINGTON – Democrat Ann Kirkpatrick outpaced Republican Rep. Paul Gosar in fundraising through the first half of the year, according to new campaign finance reports, as the two face a potential 2012 rematch in Arizona’s 1st District.